EP2736201A1 - Verfahren und system zur verwaltung von routingtabellen - Google Patents

Verfahren und system zur verwaltung von routingtabellen Download PDF

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Publication number
EP2736201A1
EP2736201A1 EP12814474.8A EP12814474A EP2736201A1 EP 2736201 A1 EP2736201 A1 EP 2736201A1 EP 12814474 A EP12814474 A EP 12814474A EP 2736201 A1 EP2736201 A1 EP 2736201A1
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EP
European Patent Office
Prior art keywords
routing
next hop
information
host
hop information
Prior art date
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Granted
Application number
EP12814474.8A
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English (en)
French (fr)
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EP2736201B1 (de
EP2736201A4 (de
Inventor
Ning Lin
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/54—Organization of routing tables

Definitions

  • the present invention relates to the field of routers and Layer 3 switch routing management, and in particular, to a routing table management method and system.
  • routing may be classified into subnet routing and host routing, in which the egress of the host routing and the egress of the subnet routing all point to a certain port, and therefore, in terms of routing management, usually, when processing the subnet routing and the host routing and performing a writing hardware operation, egress information such as the next hop of the routing containing port information, egress virtual local area network (VLAN) information, destination MAC (DMAC) replacement information and so on is written into a chip together with the routing.
  • VLAN virtual local area network
  • DMAC destination MAC
  • the commonly used setting method for forwarding host routing and subnet routing mainly includes the following steps:
  • the current routing table management method is very complicated and cumbersome, since there is a next hop correlation between the host routing and the subnet routing, the lookup and relation between the host routing and the subnet routing are very complicated, moreover, the number of fluctuations of this routing is also relatively frequent in an actual network, thereby causing low routing management efficiency, and thus greatly effecting the operating efficiency of the routers or the switches over the network.
  • the present invention provides a routing table management method and system, which can correlate the subnet routing and host routing with a link, making the management of subnet routing and host routing more simple and brief, and improving the operating efficiency of the system.
  • the method further comprises:
  • each specific index in the next hop information index table contains port information, DMAC replacement information, SMAC information and VLAN information of the corresponding next hop information.
  • the port information, DMAC replacement information, SMAC information and VLAN information of the corresponding next hop information contained in each specific index in the next hop information index table can be changed manually or automatically.
  • a routing table management system comprising a host router and a next hop information index module, wherein the next hop information index module is configured to construct the correlation between a specific index in a next hop information index table included therein and the corresponding next hop information; and the host router is configured to construct the correlation between a host routing and next hop information corresponding to the host routing according to the next hop information index module.
  • the routing table management system further comprises a subnet router, which points to a corresponding host router and acquires a next hop information index table thereof from the next hop information index module, and constructs the correlation between a subnet routing and next hop information corresponding to the subnet routing according to a specific index in the next hop information index table.
  • a subnet router which points to a corresponding host router and acquires a next hop information index table thereof from the next hop information index module, and constructs the correlation between a subnet routing and next hop information corresponding to the subnet routing according to a specific index in the next hop information index table.
  • each specific index in the next hop information index table contains port information, DMAC replacement information, SMAC information and VLAN information of the corresponding next hop information.
  • the port information, DMAC replacement information, SMAC information and VLAN information of the corresponding next hop information contained in each specific index in the next hop information index table can be changed manually or automatically.
  • the embodiments of the present invention compared to the existing subnet routing management method, adopts a management method of establishing a routing table based on next hop information to manage host routing and subnet routing, and when operating at the host routing and the subnet routing, fewer search and lookup actions between each other are required, and all these are correlated by the next hop information between the two kinds of routings.
  • the routing table management method and system provided in the present invention to perform routing table management, the management efficiency of the routing table is improved, the overheads of routing management computation of the system are saved, and the operational efficiency of the system is increased.
  • the embodiments of the present invention provide a routing table management method. As shown in Fig. 1 , the method includes the following steps:
  • the manner for creating the next hop information index table in the host routing can be manual creation, or be created automatically according to certain rules, in which the next hop information index table contains several independent specific indices, and the specific indices contain port information, destination MAC (DMAC) replacement information, source MAC (SMAC) information and virtual LAN (VLAN) information of the corresponding next hop information, and in addition, those ordinary skilled in the art can easily conceive that the specific indices also contain other information of the next hop information, which will not be listed here one by one.
  • DMAC destination MAC
  • SMAC source MAC
  • VLAN virtual LAN
  • the specific indices construct the correlation between the host routing and the corresponding next hop information thereof, and in step S102, after the host routing has selected a specific index in the corresponding next hop information index table, the correlation between the host routing and next hop information corresponding to the host routing will be constructed accordingly.
  • step S103 during routing forwarding process, the subnet routing will point to the corresponding host routing, and in the embodiments of the present invention, the subnet routing will acquire a next hop information index table thereof from the host routing, and in step S104, the subnet routing constructs the correlation between the subnet routing and the next hop information corresponding to the subnet routing according to a specific index in the next hop information index table, and finds the next hop information corresponding to the subnet routing accordingly.
  • the port information, destination MAC replacement information, source MAC information and virtual local area network (VLAN) information of the corresponding next hop information contained in each specific index in the next hop information index table can be changed manually or automatically.
  • VLAN virtual local area network
  • the next hop information corresponding to the specific index in the next hop information index table of the host routing can be modified directly, and the port information, DMAC replacement information, SMAC information and VLAN information of the next hop information may be modified manually, or may also be modified automatically according to a certain modification rule.
  • the embodiments of the present invention also provide a routing table management system.
  • the system includes a host router 20, and a next hop information index module 201, wherein the next hop information index module 201 is configured to construct the correlation between a specific index in a next hop information index table included therein and next hop information corresponding to the specific index; and the host router 20 is configured to construct the correlation between a host routing and next hop information corresponding to the host routing according to the next hop information index module 201.
  • the routing table management system also includes a subnet router 10, which points to the corresponding host router 20 and acquires a next hop information index table thereof from the next hop information index module 201, and constructs the correlation between the subnet routing and the next hop information corresponding to the subnet routing according to a specific index in the next hop information index table, wherein each specific index in the next hop information index table contains port information, DMAC (destination MAC) replacement information, SMAC (source MAC) information and VLAN (virtual LAN) information of the corresponding next hop information.
  • DMAC destination MAC
  • SMAC source MAC
  • VLAN virtual LAN
  • the port information, DMAC replacement information, SMAC information and VLAN information of the corresponding next hop information contained in each specific index in the next hop information index table may be changed manually or automatically.
  • next hop information index table (referred to as an egress table hereinafter) in the host routing:
  • the next hop of the subnet routing is a corresponding host routing, and during particular implementation process, this subnet routing can obtain the specific index of the egress table to which the subnet routing points through this host routing, and assigns this specific index to the subnet routing directly, and then this subnet routing and next hop corresponding to this subnet routing are bound together.
  • next hop of this host routing changes, it doesn't need query which host routings point to this next hop; instead, the specific index in the egress table is changed directly. After having modified the content of the specific index in this egress table, the actual egresses of all the host routings and the subnet routings which point to this next hop have be changed, as such, the modification and update operations of the host routing are completed easily.
  • next hop of the subnet routing is also changed with the fluctuation of the routing protocol, and the next hop may change to pointing to host routing B from initially pointing to host routing A, and at this moment, in the embodiments of the present invention, it is merely required to find a specific index of the egress table of host routing B newly, and to assign the specific index of the egress table of hosting routing B to the subnet routing directly, and thus the update operation of the next hop of the subnet routing can be completed. During this process, this operation will not affect the subnet routings which still point to host routing A, and will not affect the pointing of host routing A and host routing B. Therefore, when the routing table management method provided in the embodiments of the present invention is adopted to update or modify subnet routing, there also has beneficial effects of being convenient and rapid.
  • FIG. 2 it is a schematic diagram of the configuration of host routing and subnet routing provided in the embodiments of the present invention, which shows the configuration steps of host routing and subnet routing.
  • the host routing is 10.10.10.10
  • the next hop information thereof is port: 1
  • DMAC 00 d0 d0 00 00 01
  • VLAN 100
  • the subnet routing thereof is 20.20.0.0
  • the corresponding next hop thereof is 10.10.10.10.
  • the particular configuration method has the following steps:
  • next hop of host routing 10.10.10.10 needs to be updated, the corresponding egress thereof is switched to port: 2, and the corresponding next hop information thereof becomes port: 2, DMAC: 00 d0 d0 00 00 01, VLAN: 100.
  • the routing table management method and system provided in the embodiments of the present invention need not update all relevant subnet routings but merely need to update the next hop information of the host routing, thus improving management efficiency to a certain extent.
  • the above-mentioned embodiments of the present invention relate to a method and a system for rapidly performing routing table management by using the next hop of a routing table to link a subnet routing with a host routing, so that the reference relationship between the host routing and the subnet routing is very definite, and no complicated mutual lookup operation is required, simplifying the management of the routing table, saving a large amount of routing management time, and improving the operating efficiency of the system.
  • the subnet routing corresponding to the host routing can be forwarded correctly without sensing same.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
EP12814474.8A 2011-07-20 2012-06-29 Verfahren und system zur verwaltung von routingtabellen Active EP2736201B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110203966.1A CN102263693B (zh) 2011-07-20 2011-07-20 一种路由表管理方法及系统
PCT/CN2012/077885 WO2013010435A1 (zh) 2011-07-20 2012-06-29 路由表管理方法及系统

Publications (3)

Publication Number Publication Date
EP2736201A1 true EP2736201A1 (de) 2014-05-28
EP2736201A4 EP2736201A4 (de) 2015-01-14
EP2736201B1 EP2736201B1 (de) 2020-01-01

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EP (1) EP2736201B1 (de)
CN (1) CN102263693B (de)
WO (1) WO2013010435A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2928126A4 (de) * 2012-11-29 2015-11-18 Zte Corp Subnetzroutenverarbeitungsverfahren und nachrichtenweiterleitungsvorrichtung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102263693B (zh) * 2011-07-20 2017-10-10 中兴通讯股份有限公司 一种路由表管理方法及系统
US9369367B2 (en) * 2012-04-25 2016-06-14 Telefonaktiebolaget Lm Ericsson (Publ) Host-router virtual tunnelling and multiple tunnel management
CN104486229B (zh) * 2014-12-24 2017-09-29 迈普通信技术股份有限公司 一种实现vpn网络报文转发的方法及设备
CN109639581B (zh) * 2019-02-21 2021-05-28 杭州迪普科技股份有限公司 交换芯片的表项维护方法和装置

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US7707306B2 (en) * 2002-01-15 2010-04-27 Panasonic Corporation Routing device for connecting multiple physically discrete networks into a single system and startup method thereof
CN1216473C (zh) * 2003-03-28 2005-08-24 清华大学 支持多个下一跳的三态内容可寻址存储器查找方法及系统
CN100486212C (zh) * 2005-07-12 2009-05-06 中兴通讯股份有限公司 一种提高路由表容量的方法
KR100656488B1 (ko) * 2006-01-27 2006-12-11 삼성전자주식회사 라우팅 시스템 및 그 라우팅 시스템의 포워딩 정보관리방법
CN101110778A (zh) * 2007-07-23 2008-01-23 中兴通讯股份有限公司 一种利用默认路由压缩路由转发表的方法
JP2010021852A (ja) * 2008-07-11 2010-01-28 Nec Corp Ｖｌａｎ通信範囲特定システム、ｖｌａｎ通信範囲特定方法およびプログラム
CN102263693B (zh) * 2011-07-20 2017-10-10 中兴通讯股份有限公司 一种路由表管理方法及系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2928126A4 (de) * 2012-11-29 2015-11-18 Zte Corp Subnetzroutenverarbeitungsverfahren und nachrichtenweiterleitungsvorrichtung

Also Published As

Publication number Publication date
EP2736201B1 (de) 2020-01-01
CN102263693B (zh) 2017-10-10
CN102263693A (zh) 2011-11-30
WO2013010435A1 (zh) 2013-01-24
EP2736201A4 (de) 2015-01-14

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